Adjustable swing bracket



i atented Nov. 18, 1947 2,431,134 ADJUSTABLE SWING BRACKET Eugene F.Monnia, Scranton, Pa., assignor to Selectronics, Inc., Carlisle, Pa., acorporation of Delaware Application April 15, 1946, Serial n-ojeeafzis'2 Claims.

My invention... relates broadly to spinning machinery and moreparticularly to an improved construction of spindle bracket for use inmachines for spinning cotton, silk, synthetic textiles, and fabricsgenerally.

One of the objects of my invention is to provide an improvedconstruction of swing bracket for spinning machines having means foraccurately adjusting the position of the spindle with respect to theswing bracket.

Another object of my invention is to provide a construction of screwadjustment means for spindle swing brackets for spinning machines.

A further object of my invention is to provide a construction of pivotadjustment means for spindle swing brackets having means for raising orlowering the assembly, and means for locking the assembly in a,predetermined position for accurately feeding a textile thread to thespinning machinery.

Other and further objects of my invention reside in an improvedconstruction of spindle swing bracket for spinning machinery adjustablefor operation in a predetermined horizontal plane, as set forth morefully in the specification hereinafter following by reference to theaccompanying drawings, in which:

Figure 1 is a side elevational view of the adjustable swing bracketof myinvention shown in operative position for supporting a bobbin; Fig. 2 isa vertical sectional view through the adjustable swing bracket andillustrating the adjustable bearing members whichmay be raised orlowered for adjusting the position of the bobbin while in operation, theview being taken on line 2--2 of Fig. 3; Fig. 3 is a horizontalsectional view taken on line 3--3 of Fig. 2; and Fig. 4 is a horizontalsectional view taken on line 4-4 of Fig. 2.

In ring spinning machinery it is not unusual to drive bolsters at ratesof the order of 6000 revolutions per minute. It is extremely importantthat the winding of the textile on the bobbins be maintained uniform. Ina multiple row of bobbins the accidental piling up of textile thread inany concentrated position on the bobbin may interfere with the highspeed operation of the spinning machine and may result in breakdown ofthe mechanism. Piling up of the thread also causes considerable waste ofvaluable yarn and difficulty in the twisting operation which follows. Ihave devised a construction of swing bracket for supporting high speedspindles wherein adjustment of the bracket may be made during the highspeed operation of the spinning mechanism for so centering the bobbinsthat pile-up is avoided.

2 The adjusting means of my invention has been found to be extremelysimple in manufacture and production and very effective in operation forimproving the efficiency and safety of the spindle mechanism.

Referring to the drawings in detail, reference character I designates abed rail on which the bracket of my invention is mounted with respect tothe spinning machine. The bed rail is shown adjacent the transverse rail2 of the spinning machine for supporting the spindle whorl 3 on theshock-absorbing member 4 carried by the swinging bracket 5. The swingingbracket 5 is adjustably supported by the spindle bracket shown at 6having the vertical web portion 1' offset at the top and bottom as at 8and 9. The oiTset portions 3 and 9 constitute arms on the spindlebracket 6 between which the swinging bracket 5 operates. The swingingbracket 5 is integrally connected with a collar portion I0 which servesas a sleeve for receiving the bushing member II, The bushing member IImay be formed in one part or two parts from lubricant containing metal.The bushing II is provided with recesses I2 and I4 in opposite endsthereof for receiving the adjustable pivot members I5 and I6 which areintroduced in the same axial line from opposite ends of the bracket 6.The pivot members I5 and I6 are formed from wear-resisting metalconically shaped on the end thereof and entering correspondingly shapedrecesses I2 and K4 in the bushing II for journaling the bushing I I inopposed bearings.

The pivot member I5 is adjustably secured in the arm 8 of the bracket bymeans of adjustable set screw I! as shown more clearly in Fig. 4. Oneside of the adjustable pivot member I5 is fiattened as represented at I5a to enable set screw I! to be secured in locked position thereagainstand maintained in selected position by lock nut I8.

The pivot member I6 has an elongated shank I9 depending therefrom, aportion of which is smooth-walled as indicated at 20, and anotherportion of which is screw-threaded as represented at 2I. The shank I9terminates in a tool-engaging head 22 which projects beyond the lowerexternally and internally screw-threaded bushing 23 integrally connectedwith the bracket 6. The external screw-threads 24 on the bushing 23enable the bracket to be screw-threaded into correspondingscrew-threaded recessse 25 in the bed rail I of the spinning machine.The external screw threads 2| on shank I9 are also engaged by a lock nut26 which enables the pivot member I6 to be set in a position to which apivot member may be adjusted.

The spindle bracket is biased in. a predetermined angular position bymeans of coil spring 21 having one end 28 thereof looped into a recess29 of web 1 of the spindle bracket, and the other end thereof latchedinto recess 30 in the swing bracket 5. The spring 21 exerts tension onthe swing bracket 5 for maintaining the spindle drive contact with thedriving band of the spinning machine receiving apparatus.

The spindle whorl 3 is shown supporting the bobbin 3| with the spindleblade projecting through the top thereof as represented at 3a. The lowerflange of the bobbin 3| is shown substan-' tially registering with ringmember 32 supported on the traverse bed rail 2 around which slides thewired guide member 33 through which the textile thread 34 is guided.

The adjustable swing bracket of my invention may be adjusted upwardly ordownwardly while the spinning mechanism is in operation and withoutinterrupting the high speed. The lock nut 26 is loosened by means of asuitable wrench, allowing head 22 of the shank IQ of pivot member Hi tobe turned clockwise or counterclockwise for revolving screw threads 21within the internal screw threads in the bushing 23 for raising orlowering pivot member It. If the operation requires the lowering of theswing bracket 5, the set screw I1 is loosened and pressure appliedagainst the projecting anvil-like end [5a of pivot member i5 while pivotmember I6 is revolved counterclockwise for lowering the plane ofoperation of the swing bracket 5. If the swing bracket 5 is to beelevated, set screw I1 is loosened sufiiciently to allow pivot member I5 to be forced upwardly as pivot member I6 is revolved clockwise forraising the swing bracket 5. A tolerance of approximately one-quarterinch is allowed for efieoting the adjustment in the operating plane ofthe swing bracket 5 for controlling the distribution of the textilethread with respect to the bobbin during the high speed operationthereof. By providing micrometer threads between the depending bushing23 and the depending shank l9, the accuracy of the required adjustmentcan be considerably improved. Where large numbers of high-speedoperating spindles are in operation the importance of my invention canbe appreciated in that textile pile-ups are reduced or eliminated byadjustments to any one of the highspeed spindles without time-consumingand lossresulting shut downs of the spinning machine.

While I have described my invention in one of its preferred embodiments,I realize that modifications in the detailed construction of the swingbracket of my invention may be made and I desire that it be understoodthat no limitations upon my invention are intended other than may beimposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is as follows:

1. A spindle bolster support for ring spinning machines comprising abracket having a pair of spaced substantially parallel extending armsand a depending screw-threaded bushing engageable with thescrew-threaded bed rail of a spinning machine, the bushing of saidbracket being internally screw-threaded, a lower pivot pin bearingpassing through said bushing and including a centrally screw-threadedshank, a tool-engaging head and a locking device, the screw-threadedshank of said lower pivot pin member engaging the internal screw threadsin said bushing for facilitating the adjustment of said lower pivot pinbearing through one of the arms of said bracket, an upper pivot pinbearing extending through the other arm of said bracket, means foradjustably securing said last-mentioned upper pivot pin bearing withrespect to said bracket, and a swing bracket journaled between said pinbearings and adjustable for transverse operation in a predeterminedplane according to the adjustment of the positions of said pin bearings.

2. A spindle bolster support for ring spinning machines comprising abracket having a screwthreaded bushing adapted to be screw-threaded intoa spinning machine bed rail and provided with upper and lowersubstantially parallel extending arms, said bushing being internallyscrewthreaded throughout a portion of its length and smooth-walledthroughout another portion of its length, a lower pivot pin bearingextending through the smooth-walled portion of said bushing and having ascrew-threaded shank engaging the internal screw threads in said bushingand having a tool-engaging end projecting beyond the end of saidbushing, locking means engaging the screw threads on said shank andoperative to eiiect locking engagement between said lower pivot pinbearing and said bushing, an upper pivot pin bearing adjustably mountedin the upper arm of said bracket and having an anvil head projectabletherethrough, and a swing bracket pivotally mounted between saidadjustable pivot pin bearing and adjustable for operation in apredetermined transverse plane with respect to said bracket.

EUGENE F. MONNIA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,200,700 Monnia et a1. May 14,1940 FOREIGN PATENTS Number Country Date 453,945 Great Britain Sept. 22,1936

